Here is a decent essay from author and philosopher Stephen Cave, twinned with his book Immortality: The Quest to Live Forever and How It Drives Civilization (Crown, 2012).
Tag philosophy of mind
So you might well have caught this on various science websites, but the thoughts of a fish, a zebrafish, have been caught on camera. As Gizmodo report:
A team of Japanese researchers has achieved something incredible: they’ve captured, for the first time ever, a movie which shows how thoughts form in the brain.